The answer is: Jehoash

2 Kings 14:13-14 - King Jehoash of Israel waged war against King Amaziah of Judah, resulting in the capture of Jerusalem and the plundering of its treasures. This act not only illustrated the political tensions of the time but also mirrors the later invasions by Babylon, confirming a cyclical pattern of conflict and conquest in Israel’s history.

Jehoash, also known as Joash, was quite the character while he ruled over the Northern Kingdom of Israel. His reign reflected the complexities of that tumultuous period in Israel's history. During his time, the Northern Kingdom often found itself in conflict with the Southern Kingdom of Judah, and Jehoash went to great lengths to assert his influence.

When Jehoash launched that memorable raid on Jerusalem, he didn't merely plunder gold and silver; this theft was symbolic. By targeting the religious and political heart of Judah, he aimed to send a clear message: Israel would not be overpowered, and Judah's treasure was fair game in the ongoing feud. But here’s a twist—this act of aggression underscores a fascinating dynamic: these two kingdoms belonged to a larger heritage tracing back to King David, and now, they were in a tug-of-war against their shared lineage.

Interestingly, when Jehoash returned to Israel with his haul of treasures and hostages, this wasn’t just an isolated incident. It reflects the recurring themes in the histories of both kingdoms throughout the Bible--rivalry, power struggles, and using wealth as a bargaining chip.

In terms of trivia, it's notable that Jehoash was called 'the second Joash' to distinguish him from Joash of Judah. This mix-up highlights the shared names and intertwining destinies of the two kingdoms, making their stories even more fascinating for students of the Bible!